She received a call from her AO the previous Tuesday (before Thanksgiving). I've seen posts from past years where some people don't get a call, the letter just just appears in their Bear's Den.
My DD's Bear's Den was updated with her decision letter on a Saturday, and she received an email on the following Monday stating a decision letter was available.
The newest CGAS school is UConn Avery Point and is the one located near the Academy. I met a CGAS student at a recent Genesis event and she said that she is housed at the Academy and commutes to Avery Point.
The trend seems to be that letters are posted on Fridays, though my DD's didn't appear until Saturday afternoon (after being told it would be there Friday).
Has she tried dodmets? That's the site where she would schedule her exams. It's different than dodmerb, which is where her exam results will be posted.
The checklist in my DD's portal didn't update until she received her appointment letter. Instead of the "Cadet Candidate Evaluation Board review complete" checkbox being checked, the entire checklist disappeared and was replaced as shown here. Best of luck to you all! 🤞